Improvement in grain-separators



Nita STATES CYRUS BATES, OF HARDIN, IOWA.

IMPROVEMENT IN GRAIN-SEPARATORSF Specification forming part of Letters Patent N0. 40,670, dated November 24, 1863.

To aZZ whom it may concern.-

Be it known that I, OYRUs BATES, of Hardin, in the county of Clayton and State of I owa, have invented a new and Improved Grain-Separator and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a side sectional view of myinvention, taken in the line :10 m, Fig. 2. Fig. 2, a plan or top view of the same.

Similar letters of reference indicate corresponding parts in the two figures.

The object of this invention is to obtain a grain separator which will effectually separate tl 6 best wheat from the inferior portion together with the chaff, chess, and other foreign substances, the invention admitting of being so regulated or adjusted that the separation of the prime from the inferior wheat may be 111 de as close as desired-that is to say, so as to separate No. 1 wheat only from the second quality, or to take in more orless of the latter, as may be required.

To this end the invention consists in the employment or use of a sliding or adjustable screen having a board attached and placed underneath the series of screens containedin an ordinary shoe, and using in connection with the screen and board aforesaid a screen placed underneath the former and provided with a trap, the latter having a spout underneath it, and all arranged in such. a manner that the inferior wheat, together with chess, oats, and other foreign substances, will be conducted by the board of the adjustable screen to the trap of the screen below, and will fall through said trap into any proper receptacle, while the sound Wheat will pass directly through the adjustable screen and the screen below and be discharged at the front end of the machine.

To enable those skilled in the art to fully understand and construct my invention, 1 will proceed to describe it.

A represents the box or case of the separator, B the fan, and O a shoe containing a series of screens, (1. These parts may all be constructed and arranged in the usual way, and therefore do not require a minute description.

In the lower part of the shoe 0 there is placed a short screen, D, which has a board or plate, E, attached to its lower or depressed end. This screen D and its board or plate E are fitted between grooves b in the sides of the shoe, so as to render it capable of being adjusted farther forward or backward in the shoe, as may be required. In the box or case A, underneath the shoe 0, there is an inclined screen, F, the latter being inclined in areverse direction to the screens a and D in the shoe 0, as shown clearly in Fig. 1. At the upper or elevated end of the screen F there is a board or plate, 0, which extends the Whole width of screen F, said board or plate containing a trap-door, G, the latter extending the whole width of the board or plate 0. Underneath the trap-door G there is a spout, H, and I is a box placed underneath said spout. J is a hopper placed on the upper part of the box or case A.

The operation is as follows The wheat passes from the hopper J down into the shoe U and through the screens a a, and is subjected to a blast from the fan B, which expels all the light, foreign impurities from the shoe 0. The sound wheat, owing to its superior gravity, passes directly through the screens a, and also through the short screen D, and falls upon the screen F, from the lower end of which it is discharged. The inferior wheat, chess, oats, &c., will, owing to their lightness, be impelled forward under the action of the blast from the fan so that they will fall upon'the board or plate E, and will fall from thence upon the board or plate 0 of the screen F, and will pass through the trapdoor G into the spout H, and from thence into the receptacle or box I. In case it is desired to separate only the very best quality of wheat from the inferior portion, the short screen D is adjusted considerably back in the shoe 0, so that only the prime wheat will fall upon it, and if a very nice or close separation is not required, the screen D is shoved sufficiently far forward in the shoe 0 so that more or less of the second quality'of wheat may fall upon screen D. Thus it will be seen that by this simple arrangement the prime wheat may be separated from the inferior portion and the separation made as close or exact as required, and at any time the machine may be used in the ordinary way without making such separation by simply closing the trapdoor Gr.

in combination with the screen F, provided with the trap-door Gr, all arranged to operate substantially as and for the purpose herein set forth.

CYRUS BATES.

I Witnesses:

A. B. BARNES, R. T. BURNHAM. 

